page typo x86_unknown-linux-musl

[jonee]

🐛 Bug description

The page https://www.serverless.com/plugins/serverless-rust is still showing "rustup target add x86_unknown-linux-musl" whereas in the readme.md here in github it shows correctly as "rustup target add x86_64-unknown-linux-musl"

🤔 Expected Behavior

👟 Steps to reproduce

Go to web page https://www.serverless.com/plugins/serverless-rust

🌍 Your environment

serverless version:

rust-plugin version: